https://devzone.nordicsemi.com/f/nordic-q-a/5403/dongle-led-current-consumptionThis may be a newbie question, but it had puzzled me for a while now. Looking at the PCA10031&#39;s schematics i can see two leds been used. LD2 i can figure out. Datasheet for the led says between 2 and 2.4 forward voltage.. let us say 2.2... (3.3en-USTelligent Community 13Wed, 04 Feb 2015 14:57:16 GMThttps://devzone.nordicsemi.com/thread/18862?ContentTypeID=1Wed, 04 Feb 2015 14:57:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:560fb0c1-12e0-4ca8-9fdc-94f6294ad1a0MartinBL<p>Hi. You are not mistaken. The values in the schematic are correct. LEDs are amazing! However, if you look closely at the datasheets for both LD1 and 2 you can see that you actually need approximately 10 times more current running through the LEDs in LD2 to reach the same luminosity as in LD1. So I guess the number makes kind of sense.</p> <p>Martin</p><div style="clear:both;"></div>